 & P(accepted) & Exposure & Post-reform R&D growth rate & Pre-reform R&D growth rate \\
 Baseline  & 0.4858*** & 2.6276*** & 0.0578*** & 0.0209. \\
    &  (0.1626) &  (1.0165) &  (0.0177) &  (0.0292) \\
 Robustness \\
 1. Only strong links (share \geq 0.5)  & 0.5318*** & 2.8696** & 0.0642*** & -0.0062. \\
  &  (0.1727) &  (1.1252) &  (0.0208) &  (0.0269) \\
 2. Only strong links (share \geq 0.9)  & 0.4397* & 3.8525** & 0.0805*** & -0.0138. \\
  &  (0.2326) &  (1.9556) &  (0.0231) &  (0.0350) \\
 3. including grade 30  & 0.4032** & 2.1839** & 0.0446*** & 0.0003. \\
  &  (0.1579) &  (0.9586) &  (0.0171) &  (0.0276) \\
 . Broader gradde window (\leq 32) & 0.4405** & 1.5880. & 0.0394** & 0.0018. \\
  &  (0.1710) &  (1.2051) &  (0.0155) &  (0.0221) \\
 . Broader gradde window (\leq 33) & 0.4529*** & 1.8675. & 0.0386** & 0.0042. \\
  &  (0.1650) &  (1.1370) &  (0.0155) &  (0.0216) \\
 . Broader gradde window (\leq 34) & 0.4632*** & 1.9897* & 0.0380** & 0.0011. \\
  &  (0.1627) &  (1.1091) &  (0.0152) &  (0.0213) \\
 . Broader gradde window (\leq 35) & 0.4688*** & 1.9550* & 0.0390*** & -0.0015. \\
  &  (0.1616) &  (1.0921) &  (0.0151) &  (0.0211) \\
 8. Clustering at the pair level  & 0.4858** & 2.6276** & 0.0578*** & 0.0209. \\
    &  (0.1961) &  (1.1029) &  (0.0198) &  (0.0273) \\
 9. Clustering at the CZ level  & 0.4858** & 2.6276** & 0.0578*** & 0.0209. \\
    &  (0.1970) &  (1.1096) &  (0.0180) &  (0.0286) \\
